FilePermission Canonical path optimization

[Bernd]

Hello,

I thik the underscores in method and field do not match very the other
names in that file (or the JCL).

If I understand right, this is an optimization for the case a security
manager is not present? For the other case, maybe having absolute but not
canonical file names is an option? Or maybe have a special optimization for
JAVA_HOME prefixed names? Or does it help in that case as well?

Gruss
Bernd
Am 01.12.2014 09:18 schrieb "deven you" <youdwei at linux.vnet.ibm.com>:

> Hi All,
>  File.getCanonicalPath() is a very time-consuming method, we observed
> significant performance degradation from some application's startup stage
> with java.io.FilePermission. However, lazying load the calls to
> getCanonicalPath() from java.ioFilePermission is straightforward and solve
> this problem effectively. Openjdk bug[1]  tracks this bug and here is the
> patch [2]. Could anyone take a look?
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8066211
> [2] http://cr.openjdk.java.net/~youdwei/ojdk-912/webrev.00/
>